Canon EF 8-15mm f4L Fisheye USM - Manual (Page 4)

ENG-3
Precautions for Shooting with a Fisheye Lens
• If dirt or dust adheres to the surface of the front lens element, it can easily appear in images due
to the lens’s short focal length. In order to avoid this, please remove dirt or dust from the surface of
the front lens element by using a commercially available air dust blower.
• Since this lens has an extremely wide angle of view, light from bright light sources, such as the
sun, can easily enter the image area. Please do not look at bright light sources using the camera’s
viewfinder.
• Depending on shooting conditions, flare and ghost will occur when bright light sources appear in
the image area. In order to prevent flare and ghost, we suggest shooting places such as shaded
areas so that bright light does not enter the lens.
• Unintentional photographing of the user’s body can easily occur during handheld shooting.
Likewise, the legs of a tripod can be unintentionally photographed when a tripod is used.
In addition, due to the optical characteristics of this lens, unintentional photographing of objects
can easily occur since the angle of view exceeds 180° in the close-up shooting range.
Therefore, please use the camera’s viewfinder or LCD display to carefully check the image area.
• Since this is an interchangeable lens, the center of the image circle of the circular fisheye and the
center of the image sensor are out of alignment. Also, there are times when vignetting, which
occurs in the four corners of an image, is not uniform.
• It is possible to use AE (Auto Exposure) even if vignetting occurs in the four corners of an image
when using a circular fisheye effect, etc. However, since the angle of view is extremely wide and
the luminance range of subjects is broad, we suggest changing the exposure manually when
possible.
Also, it is recommended that users check the image area using the LCD display when shooting
with a digital camera.
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